WO2010056606A2 - Récupération thermique de bitume superficiel au moyen d'inclusions à perméabilité accrue - Google Patents

Récupération thermique de bitume superficiel au moyen d'inclusions à perméabilité accrue Download PDF

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Publication number
WO2010056606A2
WO2010056606A2 PCT/US2009/063588 US2009063588W WO2010056606A2 WO 2010056606 A2 WO2010056606 A2 WO 2010056606A2 US 2009063588 W US2009063588 W US 2009063588W WO 2010056606 A2 WO2010056606 A2 WO 2010056606A2
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WO
WIPO (PCT)
Prior art keywords
hydrocarbons
inclusion
fluid
wellbore
formation
Prior art date
Application number
PCT/US2009/063588
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English (en)
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WO2010056606A3 (fr
Inventor
Grant Hocking
Travis W. Cavender
Roger L. Schultz
Original Assignee
Halliburton Energy Services, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Halliburton Energy Services, Inc. filed Critical Halliburton Energy Services, Inc.
Priority to BRPI0915244A priority Critical patent/BRPI0915244A2/pt
Priority to CN200980145476.1A priority patent/CN102216561B/zh
Priority to EP09752962A priority patent/EP2350436A2/fr
Publication of WO2010056606A2 publication Critical patent/WO2010056606A2/fr
Publication of WO2010056606A3 publication Critical patent/WO2010056606A3/fr

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
    • E21B43/24—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection
    • E21B43/2405—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection in association with fracturing or crevice forming processes
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/25—Methods for stimulating production
    • E21B43/26—Methods for stimulating production by forming crevices or fractures
    • E21B43/261—Separate steps of (1) cementing, plugging or consolidating and (2) fracturing or attacking the formation

Definitions

  • TECHNICAL FIELD The present disclosure relates generally to equipment utilized and operations performed in conjunction with a subterranean well and, in an embodiment described herein, more particularly provides for thermal recovery of shallow bitumen through increased permeability inclusions.
  • bitumen can be recovered through surface mining processes down to depths of approximately 70 meters, and steam assisted gravity drainage (SAGD) thermal methods can effectively recover bitumen deposits deeper than approximately 140 meters.
  • SAGD steam assisted gravity drainage
  • apparatus and methods are provided which solve at least one problem in the art.
  • One example is described below in which increased permeability inclusions are propagated into a formation and steam is injected into an upper portion of the inclusions while bitumen is produced from a lower portion of the inclusions.
  • Another example is described below in which the steam injection is pulsed and a phase control valve permits production of the bitumen, but prevents production of the steam.
  • a method of producing hydrocarbons from a subterranean formation includes the steps of: propagating at least one generally planar inclusion outward from a wellbore into the formation; injecting a fluid into the inclusion, thereby heating the hydrocarbons; and during the injecting step, producing the hydrocarbons from the wellbore.
  • a well system for producing hydrocarbons from a subterranean formation intersected by a wellbore includes at least one generally planar inclusion extending outward from the wellbore into the formation.
  • a fluid is injected into the inclusion, with the hydrocarbons being heated as a result of the injected fluid.
  • the hydrocarbons are produced through a tubular string, with the tubular string extending to a location in the wellbore below the inclusion. The hydrocarbons are received into the tubular string at that location.
  • a method of producing hydrocarbons from a subterranean formation includes the steps of: propagating at least one generally planar inclusion outward from a wellbore into the formation; injecting a fluid into the inclusion, thereby heating the hydrocarbons, the injecting step including varying a flow rate of the fluid into the inclusion while the fluid is continuously flowed into the inclusion; and during the injecting step, producing the hydrocarbons from the wellbore.
  • a method of propagating at least one generally planar inclusion outward from a wellbore into a subterranean formation includes the steps of: providing an inclusion initiation tool which has at least one laterally outwardly extending projection, a lateral dimension of the inclusion initiation tool being larger than an internal lateral dimension of a portion of the wellbore; forcing the inclusion initiation tool into the wellbore portion, thereby forcing the projection into the formation to thereby initiate the inclusion; and then pumping a propagation fluid into the inclusion, thereby propagating the inclusion outward into the formation.
  • FIG. 1 is a schematic cross-sectional view of representative earth formations in which a method embodying principles of the present disclosure may be practiced
  • FIG. 2 is a schematic partially cross-sectional view showing production of bitumen from a formation using the method and associated apparatus;
  • FIG. 3 is an enlarged scale cross-sectional view of increased permeability inclusions propagated into the formation in the method
  • FIG. 4 is a schematic partially cross-sectional view of a completed well system embodying principles of the present disclosure
  • FIG. 5 is a schematic partially cross-sectional view of another completed well system embodying principles of the present disclosure.
  • FIG. 6 is a schematic partially cross-sectional view of yet another completed well system embodying principles of the present disclosure
  • FIG. 7 is a schematic partially cross-sectional view of a further completed well system embodying principles of the present disclosure
  • FIG. 8 is a schematic partially cross-sectional view of a still further completed well system embodying principles of the present disclosure.
  • FIG. 9 is a schematic partially cross-sectional view of another completed well system embodying principles of the present disclosure
  • FIG. 10 is a schematic partially cross-sectional view of yet another completed well system embodying principles of the present disclosure
  • FIG. 11 is a schematic cross-sectional view showing initial steps (e.g., installation of casing in a wellbore) in another method of producing bitumen from the formation.
  • FIG. 12 is a schematic cross-sectional view of the method after drilling of an open hole below the casing
  • FIG. 13 is a schematic partially cross-sectional view of the method after installation of a work string
  • FIG. 14 is a schematic cross-sectional view of a tool for initiating increased permeability inclusions in the formation
  • FIG. 15 is a schematic partially cross-sectional view of the method following initiation of increased permeability inclusions in the formation
  • FIG. 16 is a schematic partially cross-sectional view of the method after retrieval of the work string
  • FIG. 17 is a partially cross-sectional view of the method after retrieval of the inclusion initiation tool
  • FIG. 18 is a cross-sectional view of the method after enlargement of a sump portion of the wellbore
  • FIG. 19 is a cross-sectional view of the method after installation of a liner string into the sump portion of the wellbore.
  • FIG. 20 is a cross-sectional view of another completed well system embodying principles of the present disclosure.
  • FIGS. 1-10 Representatively illustrated in FIGS. 1-10 are a well system 10 and associated methods which embody principles of the present disclosure.
  • an earth formation 12 contains a deposit of bitumen or other relatively heavy weight hydrocarbons 14.
  • hydrocarbons 14 It is desired to produce the hydrocarbons 14, but they are located at a depth of between approximately 70 and 140 meters, where recovery by surface mining and SAGD methods are impractical. However, it should be clearly understood that the formation 12 and the hydrocarbons 14 could be at depths of other than 70-140 meters in keeping with the principles of this disclosure.
  • the formation 12 is relatively unconsolidated or poorly cemented. However, in some circumstances the formation 12 may be able to bear substantial principal stresses.
  • An overburden layer 16 extends from the formation 12 to the surface, and a relatively impermeable layer 18 underlies the formation 12.
  • Each of the layers 16, 18 may include multiple sub-layers or zones, whether relatively permeable or impermeable.
  • FIG. 2 the well system 10 is depicted after a wellbore 20 has been drilled into the formation 12.
  • a casing string 22 has been installed and cemented in the wellbore 20.
  • An open hole sump portion 24 of the wellbore 20 is then drilled downward from the lower end of the casing string 22.
  • casing is used to indicate a protective lining for a wellbore.
  • Casing can include tubular elements such as those known as casing, liner or tubing.
  • Casing can be substantially rigid, flexible or expandable, and can be made of any material, including steels, other alloys, polymers, etc.
  • Included in the casing string 22 is a tool 26 for forming generally planar inclusions 28 outward from the wellbore 20 into the formation 12. Although only two inclusions 28 are visible in FIG. 2, any number of inclusions (including one) may be formed into the formation 12 in keeping with the principles of this disclosure.
  • the inclusions 28 may extend radially outward from the wellbore 20 in predetermined azimuthal directions. These inclusions 28 may be formed simultaneously, or in any order.
  • the inclusions 28 may not be completely planar or flat in the geometric sense, in that they may include some curved portions, undulations, tortuosity, etc., but preferably the inclusions do extend in a generally planar manner outward from the wellbore 20.
  • the inclusions 28 may be merely inclusions of increased permeability relative to the remainder of the formation 12, for example, if the formation is relatively unconsolidated or poorly cemented. In some applications (such as in formations which can bear substantial principal stresses), the inclusions 28 may be of the type known to those skilled in the art as "fractures.”
  • the inclusions 28 may result from relative displacements in the material of the formation 12, from washing out, etc. Suitable methods of forming the inclusions 28 (some of which do not require use of a special tool 26) are described in U.S. patent application serial no. 11/966212 filed on December 28, 2007, serial nos . 11/832602, 11/832620 and 11/832615, all filed on August 1, 2007, and serial no. 11/610819, filed on December 14, 2006. The entire disclosures of these prior applications are incorporated herein by this reference.
  • the inclusions 28 may be azimuthally oriented in preselected directions relative to the wellbore 20, as representatively illustrated in FIG. 3. Although the wellbore 20 and inclusions 28 are vertically oriented as illustrated in FIG. 2, they may be oriented in any other direction in keeping with the principles of this disclosure.
  • a fluid 30 is injected into the formation 12. The fluid 30 is flowed downwardly via an annulus 32 formed radially between the casing string 22 and a tubular production string 34. The tubular string 34 extends downwardly to a location which is below the inclusions 28 (e.g., in the sump portion 24).
  • the fluid 30 flows outward into the formation 12 via the inclusions 28.
  • the hydrocarbons 14 in the formation 12 are heated.
  • the fluid 30 may be steam or another liquid or gas which is capable of causing the heating of the hydrocarbons 14.
  • the hydrocarbons 14 become mobile (or at least more mobile) in the formation 12 and can drain from the formation into the wellbore 20 via the inclusions 28. As shown in FIG. 2, the hydrocarbons 14 drain into the wellbore 20 and accumulate in the sump portion 24. The hydrocarbons 14 are, thus, able to be produced from the well via the production string 34.
  • the hydrocarbons 14 may flow upward through the production string 34 as a result of the pressure exerted by the fluid 30 in the annulus 32.
  • supplemental lift techniques may be employed to encourage the hydrocarbons 14 to flow upward through the production string 34.
  • a relatively less dense fluid 36 (i.e., less dense as compared to the hydrocarbons 14) is injected into the tubular string 34 via another tubular injection string 38 installed in the well alongside the production string 34.
  • the fluid 36 may be steam, another gas such as methane, or any other relatively less dense fluid or combination of fluids.
  • Conventional artificial lift equipment (such as a gas lift mandrel 39, etc.) may be used in this method.
  • the fluid 30 is injected into the wellbore
  • a packer 42 set in the wellbore 20 above the inclusions 28 helps to contain the pressure exerted by the fluid 30, and thereby aids in forcing the hydrocarbons 14 to flow upward through the production string 34.
  • FIG. 6 the techniques of FIGS. 4 & 5 are combined, i.e., the fluid 30 is injected into the formation 12 via the injection string 40, and the fluid 36 is injected into the production string 34 via the injection string 38.
  • the fluid 30 is injected into the formation 12 via the injection string 40
  • the fluid 36 is injected into the production string 34 via the injection string 38.
  • a pulsing tool 44 is used with the injection string 40 to continuously vary a flow rate of the fluid 30 as it is being injected into the formation 12.
  • Suitable pulsing tools are described in U.S. patent no. 7404416, and in U.S. patent application serial no. 12/120633, filed on May 14, 2008. The entire disclosures of the prior patent and application are incorporated herein by this reference.
  • This varying of the flow rate of the fluid 30 into the formation 12 is beneficial, in that it optimizes distribution of the fluid in the formation and thereby helps to heat and mobilize a greater proportion of the hydrocarbons 14 in the formation.
  • the flow rate of the fluid 30 as varied by the pulsing tool 44 preferably does not alternate between periods of flow and periods of no flow, or between periods of forward flow and periods of backward flow.
  • the flow of the fluid 30 is preferably maintained in a forward direction (i.e., flowing into the formation 12) while the flow rate varies or pulses. This may be considered as an "AC" component of the fluid 30 flow rate imposed on a positive base flow rate of the fluid.
  • the configuration of the well system 10 is similar in most respects to the system as depicted in FIG. 6.
  • the production string 34 has a phase control valve 46 connected at a lower end of the production string.
  • phase control valve 46 prevents steam or other gases from being produced along with the hydrocarbons 14 from the sump portion 24.
  • a suitable phase control valve for use in the system 10 is described in U.S. patent application serial no. 12/039206, filed on February 28, 2008. The entire disclosure of this prior application is incorporated herein by this reference.
  • both of the pulsing tool 44 and the phase control valve 46 are used with the respective injection string 40 and production string 34.
  • any of the features described herein may be combined in the well system 10 as desired, without departing from the principles of this disclosure.
  • multiple inclusion initiation tools 26a, 26b are used to propagate inclusions 28a, 28b at respective multiple depths in the formation 12.
  • the fluid 30 is injected into each of the inclusions 28a, 28b and the hydrocarbons 14 are received into the wellbore 20 from each of the inclusions 28a, 28b.
  • inclusions 28 may be formed at multiple different depths in a formation, and in other embodiments inclusions may be formed in multiple formations, in keeping with the principles of this disclosure.
  • inclusions 28a, 28b there could be a relatively impermeable lithology (e.g., a layer of shale, etc.) between the upper and lower sets of inclusions 28a, 28b.
  • the inclusion propagation tool 26 could be similar to any of the tools described in several previously filed patent applications. Most of these previously described tools involve expansion of a portion of a casing string to, for example, increase compressive stress in a radial direction relative to a wellbore.
  • FIGS. 11-19 a method is representatively illustrated for forming the inclusions 28 in the system 10 without expanding casing.
  • FIG. 11 depicts the method and system 10 after the wellbore 20 has been drilled into the formation 12, and the casing string 22 has been cemented in the wellbore. Note that, in this example, the casing string 22 does not extend across a portion of the formation 12 in which the inclusions 28 are to be initiated, and the casing string does not include an inclusion initiation tool 26.
  • an intermediate open hole wellbore portion 48 is drilled below the lower end of the casing string 22.
  • a diameter of the wellbore portion 48 may be equivalent to (and in other embodiments could be somewhat smaller than or larger than) a body portion of an inclusion initiation tool 26 installed in the wellbore portion 48 as described below.
  • the inclusion initiation tool 26 is conveyed into the wellbore 20 on a tubular work string 50, and is installed in the wellbore portion 48.
  • Force is used to drive the tool 26 through the earth surrounding the wellbore portion 48 below the casing string 22, since at least projections 52 extend outwardly from the body 54 of the tool and have a larger lateral dimension as compared to the diameter of the wellbore portion 48.
  • the body 54 could also have a diameter greater than a diameter of the wellbore portion 48 if, for example, it is desired to increase radial compressive stress in the formation 12.
  • FIG. 14 a cross-sectional view of the tool 26 driven into the formation 12 is representatively illustrated. In this view, it may be seen that the projections 52 extend outward into the formation 12 to thereby initiate the inclusions 28.
  • the tool 26 is depicted in FIG. 14 as having eight equally radially spaced apart projections 52, it should be understood that the tool could be constructed with any number of projections (including one), and that any number of inclusions 28 may be initiated using the tool.
  • the tool 26 could include two projections 52 spaced 180 degrees apart for initiation of two inclusions 28.
  • Such a tool 26 could then be raised, azimuthally rotated somewhat, and then driven into the formation 12 again in order to initiate two additional inclusions 28. This process could be repeated as many times as desired to initiate as many inclusions 28 as desired.
  • the inclusions 28 may be propagated outward into the formation 12 immediately after they are initiated or sometime thereafter, and the inclusions may be propagated sequentially, simultaneously or in any order in keeping with the principles of this disclosure. Any of the techniques described in the previous patent applications mentioned above (e.g., U.S. patent application serial nos. 11/966212, 11/832602, 11/832620, 11/832615 and 11/610819) for initiating and propagating the inclusions 28 may be used in the system 10 and associated methods described herein.
  • the inclusions 28 have been propagated outward into the formation 12. This may be accomplished by setting a packer 56 in the casing string 22 and pumping fluid 58 through the work string 50 and outward into the inclusions 28 via the projections 52 on the tool 26.
  • the tool 26 may or may not be expanded (e.g., using hydraulic actuators or any of the techniques described in the previous patent applications mentioned above) prior to or during the process of pumping the fluid 58 into the formation 12 to propagate the inclusions 28.
  • the fluid 58 may be laden with sand or another proppant, so that after propagation of the inclusions 28, a high permeability flowpath will be defined by each of the inclusions for later injection of the fluid 30 and production of the hydrocarbons 14 from the formation 12.
  • the body 54 could be expanded radially outward (e.g., using hydraulic actuators, etc.), and the fluid 58 could be pumped out of the expanded body to form the inclusions 28.
  • the work string 50 has been retrieved from the well, leaving the tool 26 in the wellbore portion 48 after propagation of the inclusions 28.
  • the tool 26 could be retrieved with the work string 50, if desired.
  • the wellbore portion 48 has been enlarged to form the sump portion 24 for eventual accumulation of the hydrocarbons 14 therein.
  • the wellbore portion 48 is enlarged when a washover tool (not shown) is used to retrieve the tool 26 from the wellbore portion.
  • the wellbore portion 48 may itself serve as the sump portion 24 without being enlarged at all.
  • the sump portion 24 has been extended further downward in the formation 12.
  • the sump portion 24 could extend into the layer 18, if desired, as depicted in FIGS. 2-10.
  • a tubular liner string 60 has been installed in the well, with a liner hanger 62 sealing and securing an upper end of the liner string in the casing string 22.
  • a perforated or slotted section of liner 64 extends into the wellbore portion 24 opposite the inclusions 28, and an un-perforated or blank section of liner 66 extends into the wellbore portion below the inclusions.
  • the perforated section of liner 64 allows the fluid 30 to be injected from within the liner string 60 into the inclusions 28.
  • the perforated section of liner 64 may also allow the hydrocarbons 14 to flow into the liner string 60 from the inclusions 28. If the un-perforated section of liner 66 is open at its lower end, then the hydrocarbons 14 may also be allowed to flow into the liner string 60 through the lower end of the liner.
  • the production string 34 may be installed (with its lower end extending into the liner string 60), along with any of the injection strings 38, 40, the pulsing tool 44 and/or the phase control valve 46, as desired.
  • Another completion option is representatively illustrated in FIG. 20.
  • the upper liner 64 is provided with a series of longitudinally distributed nozzles 68.
  • the nozzles 68 serve to evenly distribute the injection of the fluid 30 into the inclusions 28, at least in part by maintaining a positive pressure differential from the interior to the exterior of the liner 64.
  • the nozzles 68 may be appropriately configured (e.g., by diameter, length, flow restriction, etc.) to achieve a desired distribution of flow of the fluid 30, and it is not necessary for all of the nozzles to be the same configuration.
  • the lower liner 66 is perforated or slotted to allow the hydrocarbons 14 to flow into the liner string 60.
  • a flow control device 70 e.g., a check valve, pressure relief valve, etc.
  • injection of the fluid 30 heats the hydrocarbons 14, which flow into the wellbore 20 and accumulate in the sump portion 24, and enter the lower end of the production string 34 via the flow control device 70.
  • the fluid 30 can periodically enter the lower end of the production string 34 (e.g., when a level of the hydrocarbons 14 in the sump portion drops sufficiently) and thereby aid in lifting the hydrocarbons 14 upward through the production string.
  • the flow control device 70 could also include a phase control valve (such as the valve 46 described above) to prevent steam or other gases from flowing into the upper liner 64 from the lower liner 66 through the flow control device.
  • a phase control valve such as the valve 46 described above
  • the phase control valve 46 could be included at the lower end of the production string as depicted in FIGS. 8-10 and described above .
  • Any of the other completion options described above may also be included in the configuration of FIG. 20.
  • the fluid 30 could be injected via an injection string 40, a relatively less dense fluid 36 could be injected via another injection string 38 and mandrel 39, a pulsing tool 44 could be used to vary the flow rate of the fluid 30, etc.
  • system 10 and methods Some particularly useful features of the system 10 and methods are that only a single wellbore 20 is needed to both inject the fluid 30 and produce the hydrocarbons 14, the fluid may be injected simultaneously with production of the hydrocarbons, and production of the hydrocarbons is substantially immediate upon completion of the well.
  • the system 10 and methods offer a very economical and effective way of producing large deposits of shallow bitumen which cannot currently be thermally produced using conventional completion techniques. Fewer wells are required, which reduces the environmental impact of such production.
  • the methods do not require a heat-up phase of 3 to 4 months as with conventional SAGD techniques, nor do the methods preferably involve a cyclic steaming process in which production ceases during the steam injection phase. Instead, the hydrocarbons 14 are preferably continuously heated by injection of the fluid 30, and continuously produced during the injection, providing substantially immediate return on investment.
  • the above disclosure provides to the art a method of producing hydrocarbons 14 from a subterranean formation 12.
  • the method includes the steps of: propagating at least one generally planar inclusion 28 outward from a wellbore 20 into the formation 12; injecting a fluid 30 into the inclusion 28, thereby heating the hydrocarbons 14; and during the injecting step, producing the hydrocarbons 14 from the wellbore 20.
  • the hydrocarbons 14 may comprise bitumen.
  • the hydrocarbons 14 producing step may include flowing the hydrocarbons into the wellbore 20 at a depth of between approximately 70 meters and approximately 140 meters in the earth.
  • the fluid 30 may comprise steam.
  • the fluid 30 may be injected into the same inclusion 28 from which the hydrocarbons 14 are produced.
  • the fluid 30 may be injected into an upper portion of the inclusion 28 which is above a lower portion of the inclusion from which the hydrocarbons 14 are produced.
  • the fluid 30 may be injected at a varying flow rate while the hydrocarbons 14 are being produced.
  • the hydrocarbons 14 may be produced through a tubular string 34 extending to a position in the wellbore 20 which is below the inclusion 28.
  • a phase control valve 46 may prevent production of the fluid 30 with the hydrocarbons 14 through the tubular string 34.
  • the inclusion 28 propagating step may include propagating a plurality of the inclusions into the formation 12 at one depth.
  • the propagating step may also include propagating a plurality of the inclusions 28 into the formation 12 at another depth.
  • the producing step may include producing the hydrocarbons 14 from the inclusions 28 at both depths .
  • the inclusion 28 propagating step may be performed without expanding a casing in the wellbore 20.
  • a well system 10 for producing hydrocarbons 14 from a subterranean formation 12 intersected by a wellbore 20 includes at least one generally planar inclusion 28 extending outward from the wellbore 20 into the formation 12.
  • a fluid 30 is injected into the inclusion 28.
  • the hydrocarbons 14 are heated as a result of the injected fluid 30.
  • the hydrocarbons 14 are produced through a tubular string 34 which extends to a location in the wellbore 20 below the inclusion 28.
  • the hydrocarbons 14 are received into the tubular string 34 at that location.
  • a pulsing tool 44 may vary a flow rate of the fluid 30 as it is being injected.
  • the fluid 30 may be injected via an annulus 32 formed between the tubular string 34 and the wellbore 20.
  • the fluid 30 may be injected via a tubular injection string 40.
  • a flow control device 70 may provide one-way flow of the hydrocarbons 14 into the tubular string 34 from a portion 24 of the wellbore 20 below the inclusion 28.
  • Also described above is a method of producing hydrocarbons 14 from a subterranean formation 12, with the method including the steps of: propagating at least one generally planar inclusion 28 outward from a wellbore 20 into the formation 12; injecting a fluid 30 into the inclusion 28, thereby heating the hydrocarbons 14, the injecting step including varying a flow rate of the fluid 30 into the inclusion 28 while the fluid 30 is continuously flowed into the inclusion 28; and during the injecting step, producing the hydrocarbons 14 from the wellbore 20.
  • the above disclosure also provides a method of propagating at least one generally planar inclusion 28 outward from a wellbore 20 into a subterranean formation 12.
  • the method includes the steps of: providing an inclusion initiation tool 26 which has at least one laterally outwardly extending projection 52, a lateral dimension of the inclusion initiation tool 26 being larger than an internal lateral dimension of a portion 48 of the wellbore 20; forcing the inclusion initiation tool 26 into the wellbore portion 48, thereby forcing the projection 52 into the formation 12 to thereby initiate the inclusion 28; and then pumping a propagation fluid 58 into the inclusion 28, thereby propagating the inclusion 28 outward into the formation 12.
  • a body 54 of the inclusion initiation tool 26 may have a lateral dimension which is larger than the internal lateral dimension of the wellbore portion 48, whereby the tool forcing step further comprises forcing the body 54 into the wellbore portion 48, thereby increasing radial compressive stress in the formation 12.
  • the fluid pumping step may include pumping the fluid 58 through the projection 52.
  • the projection forcing step may be performed multiple times, with the inclusion initiation tool 26 being azimuthally rotated between the projection forcing steps.
  • the method may include the step of expanding the inclusion initiation tool 26 in the wellbore portion 48.
  • the expanding step may be performed prior to, or during, the pumping step.
  • the method may include the step of retrieving the inclusion initiation tool 26 from the wellbore 20.
  • the method may include the steps of injecting a heating fluid 30 into the inclusion 28, thereby heating hydrocarbons 14 in the formation 12; and during the injecting step, producing the hydrocarbons 14 from the wellbore 20.

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  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
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  • General Life Sciences & Earth Sciences (AREA)
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Abstract

L’invention concerne des systèmes et des procédés pour la récupération thermique de bitume superficiel en utilisant des inclusions à perméabilité accrue. Un procédé de production d’hydrocarbures à partir d’une formation souterraine comprend les étapes suivantes: propager au moins une inclusion essentiellement plane vers l’extérieur à partir d’un puits de forage dans la formation; injecter un fluide dans l’inclusion, chauffant ainsi les hydrocarbures; et pendant l’étape d’injection, produire les hydrocarbures à partir du puits de forage. Un système de puits comprend au moins une inclusion essentiellement plane qui s’étend vers l’extérieur à partir du puits de forage dans une formation; un fluide injecté dans l’inclusion, des hydrocarbures étant chauffés comme conséquence de l’injection du fluide; et une rame tubulaire à travers laquelle les hydrocarbures sont produits, la rame tubulaire s’étendant jusqu’à un endroit dans le puits de forage qui est situé en dessous de l’inclusion, et les hydrocarbures étant reçus dans la rame tubulaire à cet endroit.
PCT/US2009/063588 2008-11-13 2009-11-06 Récupération thermique de bitume superficiel au moyen d'inclusions à perméabilité accrue WO2010056606A2 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
BRPI0915244A BRPI0915244A2 (pt) 2008-11-13 2009-11-06 método para produzir hidrocarbonetos de uma formação subterrânea, sistema de poço para produzir hidrocarbonetos de uma formação subterrânea interceptada por um furo de poço e método para propagar pelo menos uma inclusão geralmente planar para fora de um furo de poço para uma formação subterrânea
CN200980145476.1A CN102216561B (zh) 2008-11-13 2009-11-06 通过增强渗透性包裹体的浅层沥青的热采
EP09752962A EP2350436A2 (fr) 2008-11-13 2009-11-06 Récupération thermique de bitume superficiel au moyen d'inclusions à perméabilité accrue

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US12/269,995 2008-11-13
US12/269,995 US8151874B2 (en) 2006-02-27 2008-11-13 Thermal recovery of shallow bitumen through increased permeability inclusions

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WO2010056606A2 true WO2010056606A2 (fr) 2010-05-20
WO2010056606A3 WO2010056606A3 (fr) 2010-08-19

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US (2) US8151874B2 (fr)
EP (1) EP2350436A2 (fr)
CN (2) CN102216561B (fr)
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CN102216561A (zh) 2011-10-12
EP2350436A2 (fr) 2011-08-03
ECSP11011128A (es) 2011-09-30
CN104018818A (zh) 2014-09-03
CN102216561B (zh) 2014-10-22
US8151874B2 (en) 2012-04-10
US20090101347A1 (en) 2009-04-23
RU2466271C1 (ru) 2012-11-10
CA2821503C (fr) 2015-09-15
BRPI0915244A2 (pt) 2016-11-01
US8863840B2 (en) 2014-10-21
CA2821503A1 (fr) 2010-05-13
CN104018818B (zh) 2017-04-12
CA2686050A1 (fr) 2010-05-13
WO2010056606A3 (fr) 2010-08-19
CA2686050C (fr) 2015-02-03
US20120160495A1 (en) 2012-06-28

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